| Galazy Advisors AG | Aargau |
| Galderma | |
| Galli Sicurezza S.A. | Ticino |
| Galventa AG | |
| GAMAYA | |
| Gamma & Co GmbH | Aargau |
| Gamper Media GmbH | Aargau |
| Gartenmann Software AG | Zurich |
| GBMF | |
| GE-CIX AG | Zurich |
| GE.net | Valais |
| Gebert Rüf Stiftung | |
| Geistlich Pharma AG | |
| Gelato Networks | Zug |
| Genedata AG | |
| Geneous Software AG | Zurich |
| Genesis Swiss Team AG | Bern |
| GeNeuro S.A. | |
| Geneva Bioinformatics (GeneBio) S.A. | |
| Geneva Biotech | |
| Geneva Graduate Institute | |
| Geneva Information Technology Institute | Geneva |
| Genexa AG | |
| Genius Project | Lucerne |
| GenomSys S.A. | |
| GenTwo AG | |
| Geo.net IT GmbH | Basel-Landschaft |
| GeoCTRL | |
| Geoinfo Gruppe | Appenzell Ausserrhoden |
| GeoLogix AG | Bern |
| Geoquip Marine Operations AG | |
| Gerber Systems & Networks | Vaud |
| Geste Informatique S.A. | Geneva |
| getAbstract AG | |
| GetSet Surgical S.A. | |
| Getunik AG | Zurich |
| GHC GmbH | Lucerne |
| Ghisler Software GmbH | |
| Giano Capital | |
| GIANTS Software GmbH | Zurich |
| Gilgen Logistics AG | Bern |
| Gilytics AG | |
| Gilytics AG | |
| Ginko Ventures S.à.r.l. | Geneva |
| Giotto.ai S.A. | |
| Givaudan | |
| Gjosa S.A. | |
| gl it GmbH | Glarus |
| Glaronia Informatik AG | Glarus |
| Glarotech GmbH | St. Gallen |